The chemical compositions of garnet and orthopyroxene and their textural relationships indicate re-equilibration of the leucotroctolites at conditions of 790 ± 60 °C and 8 ± 1 kbar, at the amphibolite to granulite facies transition. Subsequently, olivine was decomposed by various reactions, leading to conspicuous intergrowths of granular orthopyroxene with lamellar magnetite, displaying oriented ilmenite and gahnite exsolution. Ilmenite-magnetite geothermometry yields temperatures of 500–550 °C. Our results clearly indicate that the Kunene Intrusive Complex intruded into the lower crust and underwent nearly isobaric cooling.